I'm trying to track down a strange issue with my servers. Within the last day or so, connections to certain SSL protected sites(both HTTP and SMTP) started failing.
Here is the output from openssl:
CONNECTED(00000003) depth=1 C = IL, O = StartCom Ltd., OU = Secure Digital Certificate Signing, CN = StartCom Class 2 Primary Intermediate Server CA verify error:num=20:unable to get local issuer certificate verify return:0
This is only affecting servers which are protected by startcom certificates, and has only started happening in the last few days. I verified that the StartCom certificates are installed in /etc/ssl/certs and they are the ones I need.
What makes this really bizarre is that using wget succeeds and curl fails. This is on Debian Jessie.